Heating element for igniting pyrotechnic charge

摘要

A heating element for the ignition of a pyrotechnic charge, e.g. for firing an air bag, has increased stability with respect to transient pulses and electrostatic discharge as a result of a selection of this mass, specific resistance and specific heat capacity. In particular the mass is 1.0x10^-9 kg to 4.0x10^-9 kg, the specific resistance is 1x10^-6 Omega m to 2x10^-6 Omega m and the specific heat capacity is 100 W/(kg.K) to 400 W/(kg.K).